Manufacturer Code Charts: 1070

Y32 (Air pump switchover valve) : Short circuit to ground (P0414)


Possible cause:

- Y32 (Air pump switchover valve)
Affected functions:

- Engine diagnosis

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Test 1: Check component Y32 (Air pump switchover valve).

1. Check component Y32 (Air pump switchover valve).

Test 1.1: Test actuation of component Y32 (Air pump switchover valve).

Test 1.2: Test current consumption of component Y32 (Air pump switchover valve).

1.1. Test actuation of component Y32 (Air pump switchover valve).
Test sequence

- Switch on ignition.
- Actuate component Y32 (Air pump switchover valve).(Proceed to 'Actuation' with F2)


Warning!Communication with ECU required.


1.2. Test current consumption of component Y32 (Air pump switchover valve).
Figure legend

- A -ConnectionTest cable 35-pin socket box
- 001 -Sockets of component N3/10 (ME-SFI [ME] control unit)
- 05 -35-pin socket box
- 050 -126-pin socket box
- 108 -Test cable 266 589 01 63 00
- N3/10 (ME-SFI [ME] control unit)
- II 1-63ConnectionTest cable
- III 64-126ConnectionTest cable
Warning!

- Connection A of test cable 108 may NOT be connected to connection B of the 126-pin socket box (050).
Continue to test with button F2







Test prerequisite

- The actuation was not okay.
Test sequence

- Switch off ignition.
- Connect socket box (126-pin) to component N3/10 (ME-SFI [ME] control unit).
- Measure direct current with multimeter between sockets (F.4) 100 and [M.53] 53 of the 126-pole socket box tester.
- Switch on ignition.
Specified value

- Amperage[0.3...0.6] A
Question

- Is the measurement value OK?


YES
The measurement value is OK.End of test

NO
The measurement value is not OK.Possible cause and remedy

- N10/1f57 (Fuse 57)
- N10/1kI (Circuit 87 relay, engine)
- Line between component N3/10 (ME-SFI [ME] control unit) and component Y32 (Air pump switchover valve)
- Line between component N10/1 (Driver-side SAM control unit with fuse and relay module) and component Y32 (Air pump switchover valve)
- Y32 (Air pump switchover valve)
End of test